Move imports into TYPE_CHECKING (#9123)

Tests/test_imagecms.py

@@ -7,7 +7,7 @@ import shutil
 import sys
 from io import BytesIO
 from pathlib import Path
-from typing import Any, Literal, cast
+from typing import Literal, cast
 
 import pytest
 
@@ -31,6 +31,9 @@ except ImportError:
     # Skipped via setup_module()
     pass
 
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from typing import Any
 
 SRGB = "Tests/icc/sRGB_IEC61966-2-1_black_scaled.icc"
 HAVE_PROFILE = os.path.exists(SRGB)

src/PIL/GimpPaletteFile.py

@@ -17,6 +17,9 @@ from __future__ import annotations
 
 import re
 from io import BytesIO
+
+TYPE_CHECKING = False
+if TYPE_CHECKING:
     from typing import IO
 
 

src/PIL/Image.py

@@ -38,10 +38,9 @@ import struct
 import sys
 import tempfile
 import warnings
-from collections.abc import Callable, Iterator, MutableMapping, Sequence
+from collections.abc import MutableMapping
 from enum import IntEnum
-from types import ModuleType
-from typing import IO, Any, Literal, Protocol, cast
+from typing import IO, Protocol, cast
 
 # VERSION was removed in Pillow 6.0.0.
 # PILLOW_VERSION was removed in Pillow 9.0.0.
@@ -64,6 +63,12 @@ try:
 except ImportError:
     ElementTree = None
 
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from collections.abc import Callable, Iterator, Sequence
+    from types import ModuleType
+    from typing import Any, Literal
+
 logger = logging.getLogger(__name__)
 
 

src/PIL/Jpeg2KImagePlugin.py

@@ -18,11 +18,15 @@ from __future__ import annotations
 import io
 import os
 import struct
-from collections.abc import Callable
-from typing import IO, cast
+from typing import cast
 
 from . import Image, ImageFile, ImagePalette, _binary
 
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from collections.abc import Callable
+    from typing import IO
+
 
 class BoxReader:
     """

src/PIL/JpegImagePlugin.py

@@ -42,7 +42,6 @@ import subprocess
 import sys
 import tempfile
 import warnings
-from typing import IO, Any
 
 from . import Image, ImageFile
 from ._binary import i16be as i16
@@ -53,6 +52,8 @@ from .JpegPresets import presets
 
 TYPE_CHECKING = False
 if TYPE_CHECKING:
+    from typing import IO, Any
+
     from .MpoImagePlugin import MpoImageFile
 
 #

src/PIL/PngImagePlugin.py

@@ -38,9 +38,8 @@ import re
 import struct
 import warnings
 import zlib
-from collections.abc import Callable
 from enum import IntEnum
-from typing import IO, Any, NamedTuple, NoReturn, cast
+from typing import IO, NamedTuple, cast
 
 from . import Image, ImageChops, ImageFile, ImagePalette, ImageSequence
 from ._binary import i16be as i16
@@ -53,6 +52,9 @@ from ._util import DeferredError
 
 TYPE_CHECKING = False
 if TYPE_CHECKING:
+    from collections.abc import Callable
+    from typing import Any, NoReturn
+
     from . import _imaging
 
 logger = logging.getLogger(__name__)

src/PIL/WebPImagePlugin.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from io import BytesIO
-from typing import IO, Any
 
 from . import Image, ImageFile
 
@@ -12,6 +11,9 @@ try:
 except ImportError:
     SUPPORTED = False
 
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from typing import IO, Any
 
 _VP8_MODES_BY_IDENTIFIER = {
     b"VP8 ": "RGB",